def say(k):
    print(k,flush=True)

def listen(n):
    k=int(input())
    if k>=n:
        exit()
    return k

#================================================
N,K=map(int,input().split())
if (N-1)%(K+1)==0:
    say(0)

T=0
while True:
    p=listen(N)
    T+=(K+1)
    say(T)